Samsung CLX-9252 Series Service Manual page 438

7.3.10 Blank copy , Black copy
A. Typical faulty images
B. Troubleshooting procedure
Step
1 A blank copy occurs.
A black copy occurs
2 Coupling of imaging unit drive mechanism
installed properly.
3 The OPC drum charge corona voltage co
of OPC drum ground contact of the imagi
unit is connected properly.
4 Connector is connected properly.
5 5 Connector is connected properly C
6 The problem has been eliminated through
check of step 5.
Service Manual
Blank copy
Check item
t i t d
7. Troubles shooting
Black copy
Check LSU connector for proper connection.
Check HVPS connector for proper
connection, especially, Corona Charger and
Grid Voltage
m is Check and correct drive transmitting
coupling. Change imaging unit.
ontact Check, clean, or correct the contact.
ng
Reconnect.
l Reconnect the cable between video control R
board and engine control board
h the Change high voltage unit.
 Change printer control board
 Change LSU.
7-1 41
Action
t th bl b t
To be continued on next page...
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